Studies of Euler diagrams/5x5 grid

grids

medina (5×5)

graph

Euler diagram

formula tree

manila (5×4)

The five cells between circles B and C are empty. This means, that C becomes the complement of B. Therefore, the circle C was removed.
The cells' integer labels have changed as a consequence. E.g. the label of the cell only in B and E has changed from 18 to 10.

graph

bloated Euler diagram

(bloatless) Euler diagram

gap variants

5×5

5×4

5×5 circles